diff --git a/docs/guide/installation.md b/docs/guide/installation.md
index 49fd049c5..eb88bedd6 100644
--- a/docs/guide/installation.md
+++ b/docs/guide/installation.md
@@ -18,6 +18,7 @@ By default, LNbits will use SQLite as its database. You can also use PostgreSQL
 git clone https://github.com/lnbits/lnbits-legend.git
 cd lnbits-legend/
 
+# for making sure python 3.9 is installed, skip if installed
 sudo apt update
 sudo apt install software-properties-common
 sudo add-apt-repository ppa:deadsnakes/ppa